The mineral stored in greatest quantity in bones is:

a. sodium
b. iron
c. magnesium
d. calcium
e. sulfur


d

Biology & Microbiology

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Which of the following pairs indicates the closest

macroevolutionary link among the animals according to the evolutionary history tree in the text? a. flatworms; roundworms b. sponges; cnidarians c. arthropods; annelids d. arthropods; roundworms e. echinoderms; mollusks

Biology & Microbiology

Which of the following is an example of evolution that can be observed and studied?

A. Weeds within a farm develop resistance to select herbicides. B. HIV can become resistant to various drug treatments. C. A population of bacteria gain resistance to a specific antibiotic. D. All are examples of evolution that can be observed and studied.

Biology & Microbiology

The term biotechnology refers exclusively to the use of genetically engineered organisms for the production of desired products

Indicate whether the statement is true or false

Biology & Microbiology

The total number of viable microorganisms remains constant in stationary phase because ________.

A. there is a cessation of cell division even though the cells may remain metabolically active B. there is a balance between cell division and cell death C. either there is a balance between cell division and cell death or there is a cessation of cell division even though the cells may remain metabolically active D. None of the choices are correct.

Biology & Microbiology